●COMFORT:Aluminum alloy spray treatment,ergonomic hand design with more durable and more comfortable to use. ●POWER:Twin hammer delivers Max working torque 850FT-LBS,busting breakaway torque is 1000 FT-LB. ●EASY TO USE:The swing knob is used to reverse the direction, and the forward rotation is equipped with 3 gears;the 1st lower setting for preload bolt. ●WIDELY USE:Bottom handle exhaust for working surface protection,Designed for tire shop, suspension and other heavy duty automobile work ●SPEC.:Working pressure is 90 psi, free speed is 7000 RPM,comes with oil pot, Spanner and 1/4" Male NPT air connector